Not sure if this has been addressed yet, but some outpost walls and
inner keep postern walls bug out as seen below. Players can just hop right on in/out.
To be clear, these walls' "health" are not at 0%. l don't think l've seen any bugged walls at 100%, but l know for certain most of them are in the 68%-86% range (upgraded walls left unrepaired).
Also, when a keep/outpost is captured by anther faction, the hole in the wall closes itself (at least the ones that l've seen).
[img][/img]
A possible explanation? Perhaps this is caused by all the Psijic time stop spells that may be tampering with forces more powerful and unknown to us---creating time paradoxes that may destroy the universe entirely. Creating rifts in time that cause events to re-occur in the past when there were no keep walls to begin with.